We study a gauge-singlet vector-like fermion hidden sector dark matter model. in which the communication between the dark matter and the visible standard model sector is via the Higgs-portal scalar-Higgs mixing and also via a hidden sector scalar with loop-level couplings to two gluons and also to two hypercharge gauge bosons induced by a vector-like quark. We find that the Higgs-port... https://pipingrockers.shop/product-category/sangre-de-grado/